/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.iotdb.metrics.dropwizard.reporter;

import org.apache.iotdb.metrics.AbstractMetricManager;
import org.apache.iotdb.metrics.dropwizard.DropwizardMetricManager;
import org.apache.iotdb.metrics.reporter.JmxReporter;
import org.apache.iotdb.metrics.utils.ReporterType;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class DropwizardJmxReporter implements JmxReporter {
    private static final Logger LOGGER = LoggerFactory.getLogger(DropwizardJmxReporter.class);

    private AbstractMetricManager dropwizardMetricManager = null;
    private com.codahale.metrics.jmx.JmxReporter jmxReporter = null;

    @Override
    public boolean start() {
        if (jmxReporter != null) {
            LOGGER.warn("Dropwizard JmxReporter already start!");
            return false;
        }
        try {
            jmxReporter =
                    com.codahale.metrics.jmx.JmxReporter.forRegistry(
                                    ((DropwizardMetricManager) dropwizardMetricManager).getMetricRegistry())
                            .inDomain("org.apache.iotdb.metrics")
                            .build();
            jmxReporter.start();
        } catch (Exception e) {
            LOGGER.error("Failed to start Dropwizard JmxReporter, because {}", e.getMessage());
            return false;
        }
        return true;
    }

    @Override
    public boolean stop() {
        if (jmxReporter != null) {
            jmxReporter.stop();
            jmxReporter = null;
        }
        return true;
    }

    @Override
    public ReporterType getReporterType() {
        return ReporterType.JMX;
    }

    @Override
    public void setMetricManager(AbstractMetricManager metricManager) {
        this.dropwizardMetricManager = metricManager;
    }
}
